Is rocking motion predictable?. (5th October 2017)

• Record Type: Journal Article
• Authors: Bachmann, J. A.; Strand, M.; Vassiliou, M. F.; Broccardo, M.; Stojadinović, B.
• Is Part Of: Earthquake engineering and structural dynamics. Volume 47:Number 2(2018)
• Page Start: 535
• Page End: 552
• Publication Date: 2017-10-05
• Subjects: model validation -- overturning probability -- rocking -- shake table experiments -- uplifting structures; Structural dynamics -- Periodicals; Earthquake engineering -- Periodicals; 624.1762
• DOI: 10.1002/eqe.2978
• Languages: English
• ISSNs: 0098-8847

Abstract

Summary: An argument of engineers and researchers against the use of rocking as a seismic response modification technique is that the rocking motion of a structure is chaotic and the existing models are incapable of predicting it well. This argument is supported by the documented inability of rocking models to predict the motion of a specimen excited by a single ground motion. A statistical comparison of the experimental and the numerical responses of a rigid rocking oscillator not to a specific ground motion, but to ensembles of ground motions that have the same statistical properties, is presented. It is shown that the simple analytical model proposed by Housner in 1963 is capable of predicting the statistics of seismic response of a rigid rocking oscillator.